Measuring pump counter



y 1, 1952 v. A. BRUNSON 0 MEASURING PUMP COUNTER Filed Nov. 6, 1950\NVENTOP. \luzen. A. Bxzunsow ATTORNEYS Patented July I, 1952 MEASURINGPUMPCOUNTER Virgil A. Brunson, Grand Rapids, Mich, assignor BlackmerPump Company, Grand Rapids,

I Mich., a corporation of Michigan Application November 6, 1950,SerialNo. 194,260 v 4 Claims. (01. 235-94) This invention relates to anovel counter operating mechanism, the purpose of which is to havealways ready for observation the number of rctations of the shaft of arotating vane pump which pump, with each rotation of the shaft,discharges a metered quantity of liquid; or,'as an alternative, anindicator showing the quantity of liquid pumped. It is a primary objectof the present invention to provide a counting mechanism which may bereadily attached or detached from a measuring pump without in any wayaltering the pump structure so that the pump may be used either with orwithout the counter depending upon the desires or requirements of theuser.

An understanding of the invention may be had from the followingdescription, taken in connection with the accompanying drawing, inwhich:

Fig. 1 is an end view of the pump, at which end the invention isapplied, parts of the counter actuating means being broken away forbetter disclosure of structure and,

Fig. 2 is a fragmentary, generally horizontal section substantially onthe plane of line 2-2 of Fig. 1.

Like reference characters refer to like parts in the different figuresof the drawing.

The casing of the pump l, in which the rotor is mounted, has at an endthereof a projecting boss 2, beyond which an extending end portion 3 ofthe rotor shaft extends. Shaft 3, adjacent its ends, is preferablyflattened at both sides to make opposed parallel flattened surfaces 4. Ahandle 5 for manual operation of the shaft to turn it is provided withan opening to correspond with the cross section of the flattened outerend of the shaft, to fix the handle to the shaft by means of a securingnut as shown. Such pump structure, old in itself, and which with eachrotation of the shaft discharges a metered quantity of liquid, is theenvironment in which my invention is used, but in itself is not new.

In my invention, a cylindrical sleeve 6, having a diameter greater thanthe diameter of the boss 2, and having a length somewhat longer than thedistance the boss projects outwardly, is detachably secured by screws orotherwise to the end of the pump casing atwhich the handle is located.At one side it has an opening at which the outer indicating face of acounter 1 is located, such counter being detachably secured to the boss2 preferably by screws. The counter has a rotatable shaft 8 at the outerend of which is a star wheel 9 shown as having five equally spacedradiating vanes, which number may be varied.

The sleeve 6, open at its outer end and extending slightly beyond thestar wheel 9, is covered by a sheet metal cap III, which, likewise, hasan opening centrally thereof conforming to and for the passage of theflattened end section of the shaft 3. Such cap I0 is located at theinner side of the handle 5 and comes against the shoulders at the innerends of the flattened portions 4 so that, when the outer clamping nut istightened, the cap 10 is securely but detachably connected with theshaft 3 and turns therewith. The cap II] has a peripheral flange whichclose]; surrounds the end of the sleeve 6 to prevent entrance ofextraneous matter.

From the sheet metal cap 10 spaced tongues I I are struck inwardly atthe proper radial distance from the center of the shaft 3 that, as thecap in is turned with the shaft 3, the successive tongues H engage theradiating vanes of the star wheel one after the other. As shown thereare the same number of tongues ll struck from the cap ID as there arevanes in the star wheel. Such equalization of the number of tongues Hwith a like number of vanes on the star wheel, however, is not anessential requirement of the invention, as the number of each may bevaried.

The manufacturer of these pumps has demands for pumps both with andwithout the counting mechanism. And the purchaser of the same pump maydesire to use it at times with the counter and at other times withoutit. With the present structure the pumps may all be made alike with theboss with a screw hole on the casing to which the sleeve 6 can beattached, and with the seat and screw holes on the shaft boss 2 forattaching the counting device.

The pumps may be sold as above without the counting mechanism to suchcustomers as desire it that way, but when the cutomer desires thecounting mechanism the sleeve 6 may be attached to the pump casing, thecounting device screw connected to the boss 2 and the cap [0 placed onthe shaft 3 under the hand crank 5 and clamped in place by the nut whichholds the crank in place, and the pump is then complete with counter andweather protecting shield without changing the basic pump structure.

When a customer has bought a pump without a counter the parts 6, I andI0 may be later furnished him so that he can himself apply them to thepump without alteration, simply by the use of a wrench and screwdriver.

The counter and the operating star wheel therefor are housed within thesleeve 6 and the cap I at the outer end thereof. The structure issimple, but particularly effective for the purposes for which it isdesigned, easily manufactured at low cost and exceptionally satisfactoryin operation.

, The invention is defined in the appended claims and is to beconsidered comprehensive of all forms of structure coming within theirscope.

I claim:

1. The combination with a measuring pump having a casing and a rotatableshaft projecting from the case of an open ended sleeve surrounding saidshaft, means for detachably connecting said sleeve to said casing, saidsleeve having an open outer end, a counting device cletachably connectedin fixed relation to said sleeve, a cap covering the open end of thesleeve, means for V detachably connecting said cap in fixed relation tosaid shaft for rotation therewith and cooperating means on said cap andsaid counting device for actuating said counting device upon rotation ofsaid shaft and cap.

2. The elements of claim 1 in which said pump casing has a bosssurrounding said shaft within said sleeve and said counting device ismounted on said boss within said sleeve and said sleeve has a windowthrough which said counting device appears.

3. The elements of claim 1 in which said pump shaft has a hand crankwith means for detachably connecting said hand crank to said shaft andsaid means for detachably connecting said cap 4 to said crank is thesame means which connects said hand crank to said shaft.

4. The combination with a measuring pump having a casing, a boss on thecasing, a rotatable crank projecting through said boss, a hand crank andmeans for detachably connecting said hand crank to said shaft of asleeve surrounding said boss andhaving a window and an open outer endmeans for detachably connecting said sleeve to said casing, a countingdevice detachably connected to said boss and appearing through REFERENCECI D The following references are of record in the file of this patent:

UNITED STATES PATENTS N m er a Da 252 6i fl .3mm "-7 an- 24, 18,82635,139 Ro'rnbaek Oct. 17, .1399

1,739,914 Brubaker Oct. 8, 1929 Henson; Deb 3 1 50

